where to get wiring diagrams?

[pg123]

Hi,

I'm working on an engine swap and I need to get the wiring diagrams for an 02/98 M3 and an 06/98 ti. I have no idea where to get them (other than going to a dealer and begging to photocopy, but I'm guessing that won't work) and I'm sure BMW changes wiring between months.

Any ideas?

Thanks